package jdbc;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class LoginDemo {
    public static void main(String[] args) {
        UserInfo userInfo = InputUtil.getInputObject(new UserInfo(), "登录", "登录");
        System.out.println(userInfo);
        try (
                Connection conn = DBUtil.getConnection();
        ) {
            String str = "SELECT  id,username,password,nickname,age " +
                    "FROM userinfo " +
                    "WHERE username='" + userInfo.getUsername() + "' AND password='" + userInfo.getPassword() + "';";
            System.out.println(str);
            Statement statement = conn.createStatement();
            ResultSet rs = statement.executeQuery(str);
            if (rs.next()) {
                System.out.println("登录成功");
            } else {
                System.out.println("登录失败：用户名或密码错误");
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}
